Dump car door controlling mechanism



N. s. RE EDER DUMP CAR DOOR CONTROLLING MECHANISM Dec. 1

Filed March 1, 1929 2 Sheets-Sheet iilfl Dec. 1,1931. N. s. REEQER DUMPCAR DOOR CONTROLLING MECHANISM Filed March 1, 1929 2 Sheets-Sheet AQRNEYPatented E i es. ii, idifl.

NETED sTATEs n nes a womennew YORK,

Li. Y, BIGNOB 5N3 PBESSED ST GAE:

not? one B conrnonnmeten Application flled larch 1,

An object of my invention is to provide an operating mechanism for thedoors of a. dump car which will automatically control the opening andclosing movements of the 3 doors by the tilting movements of the carbody. Another object of. my invention is to provide a means for lockinthe doors in closed position when the body 18 horizontalnnd forreleasing the door on the discharging side for opening when the body istilte Another object of my invention is to provide a door controllingand locking mechanism for a dump car in which the controlling 15 portionof the mechanism is free of the door, when the door is locked in closedposition. A further object of m invention is to pro vide a. door lockingmec enism which moves by gret'ity to s. lochng position when the door ismoved to it closed position by the operating mechanism. 7 I

Referring to the drawings, Fig. 11s a transverse section throughthe-esrshowing the door operating end locking mechanism; 95 Fig. 2 is e planView of e portion of the our body and locking mechamsm with the corfloor removed; Fig. 3 is s plan view of a portion of the undorfi'rnmeend door opereting mechanism: Fig. 4; is s, View taken along 53 thelines H of Fig. 1; Fig. 5 is e transverse section through the corshowing the body in fully dumped position; Fig. 8 end ere sectionsthrough the, door loclrin mechanism along the lines 6--6 and 'Z' 'Z' oFig. 5; Fig.

\fifli 8 is on enlerged View oi the door locking mechanism.

Referring now in detail to the drawings where like reference chsrectersrefer to like parts, reference character 1 indicates e dump 46$ oerhaving e body '2 tiltehly mounted on on underfrnme 3 having snitshletrucks 4. At each side of the bed end hinged edjocent the floor thereofare doors 5 having stokes 6 spaced longitudinally of the door. Spaced 4elongitudinally of the car body, end at each side of the longitndinelcent/er line'ere trunnion members 36 which engage with suitable hearingsZ contained on the nnderfreme.

While Figs. 1 end 5 show the body as sup-' 5e ported on trzrnnions it iswell known in the me. semi no. sees.

3 prior art that other methods of supporting" the body may be used, andldo not WiSll to limit myself to the method as shown and described, aseny other suitehle method of so ort f the body may he need.

e be y trunnions 36 are in two ports. es shown by h igs. 1, 2 end 5, andspan the tronsverse member 16 of the nnderfrsrne to engage with thebearin s 7 on the sides of thet member. A metho of secnrin the trun- @dnions to the body is shown in ig. 2 of the drawings. The transversemembers 8 extend from a central longitudinal member 9 to the side sills10 of the body end to these members 8 are secured the trunnions 36. .Thetron es nions have hoe-ring surfaces to which the transverse members 11are secured and to the longitudinal member 9. A member 12 extendsbetween the ends members and trunnions to securely tiethem in posisotion. The bod member is which is soles tively engaged the door operatingmeshenism is secured ,etween the members ill on hearings 13' by niesnsoi" e pin 3.5 passing through the members 8 end ll. v Mounted on thennderfrenieend spe as longitudinellly the ct each side oi the centerline are door operating mechenisine which are wholly contained on theunderframe. Each door operating mechanism ct each side of the underfremeis independent of any other similar mechanism and IS in en gegement withthe cerrhody only during the time the body is horizontel or is tiltingto- Ward the side of the car on which the mesh enism is mounted end isin contact with the door stake only during the time the doorie openedfor discharging and in returning the door-to orlosed position.

referring to Figs. 1 end .5, it will he so noted that the transversemembers 16 oi? the .nnder'freme here bifurcated end portions end thedoor operating mechanisms are secured between these bifurcated portions.This is s distinct advantage in increasing the stability on of the carby permitting the car body to he pieced closer to the nnderframe thenisnossible in other constructions. Each door opcrating mechanism comprisesa member 1? pivotell-y mounted on the transverse member no 18 of theunderframe and having one end 18 which is adapted to selectively enga ewith a member 14 mounted on the car y.' The other end of the member 17is connected by 14 when the body returns to a horizontal position afterdumping.

Referring now to Fig. 1. of the drawings, it

will be seen that each device on each side of v the car is a duplicateof those on the other side and that the "action described for those onone side of the car when the body is tilted towards that sideis the sameas for those on the opposite side of the car -when'the body is tiltedtowards the opposite side. When the carvbody is horizontal withreference to the underframe, as shown on Fig. 1 of the drawingsflhedoors on each side of the body are locked in position by the lockingmechanism as will later be explained, and the downward de ending rtions24 of the door stakes on each side 0 the carbody are out of contact withthe door operating mecha- .nism. When the car body begins to tilt, thedepending portion 24 of the door stake moving downward faster than themember 23 causes the portion 25 of the stake to move along the member 23until this member engages with the locking member 28. Further rotationof the body moves the locking member 28 upward away from the car bodyand the door is free to open. With the continued tilting of the car bodas shown on Fi 5, the body passes out 0 contact with the cor mechanismon the left-hand side of the carand moves outwardly and downwardly onits right hand trunnions carrying the bifurcated portion 18, of theoperating member 17 on the right-hand side of the car, with it towardsthe right-hand side of the underframe.

' This movement of the member 17 causes a similar movement of the member21, through their connection by the member 19, causing the arm 22 andattached roller 23 to move downwardly and inwardly. The side door of thecar body being free of the lockin mechanism opens by the force ofgravity an the weight of the material being discharged and revolvesabout its hinges 27, causing the portion 25 of the door stake to followthe arm 22 of the member 21 until the car body reaches its final dum ingangle, and the various parts of the mec anisms are in the position shownon the right side of F i 5. It will be noted froma study of the rawingsthat the door stake is held in contact with the moving arm 22 offthemember 21 only by the rotation of the opening door. For this reasonshould the door strike an obstruction at the side of the car which wouldprevent "its further opening, the car body would continue in its dumpingmovement without injury to the door parts or operating mechanism. Thisis further demonstrated by the fact that the door can be closed whilethe car is in final dum ing position. Since the member 21 is at al timesin the path of travelof the door stake, it is also-obvious that the doorcannot continue to open after the body has been tilted to anintermediate or final tilted position.

On the opposite side of the car body to that about which the body istilting, the member 14 passes out of contact with the bifurcated portion18 of the member 17 mounted on that side of the underframe, and therising door is held locked in position by the locking mechanism. 'Duringthe time the car body is out of engagement with the door operatingmechanism the spring 26, connected to the members 17 and to theunderframe, holds the bifurcated portion 18 of the member 17 in positionto receive the member 14 of the car body upon the return of the body tohorizontal osition.

As the car ody be ins its righting movement in returning to orizontalposition, the member 14 mounted on the body and in engagement with themember 17 causes that member to move inwardly and upwardly.

The member 17 through its connection to the member 21 causes that memberto move outwardly and upwardly. This outward movement of the member 21in engagement with the door stake, combined with the rising of the sideof the car body, causes the rotation of the door about its hinges untilthe member 21 reaches substantially its extreme outward position and thedoor is closed before the body is again horizontal with the underframe.At this point the locking mechanism engages with the door, locking it inposition, and the door moves out of contact with the operatingIIIGChBIXlSIDfflS the body comes to rest on its trunnions.

The preferred embodiment of the locking mechanism, as shown in thedrawings, comprises a wedge shapedmember moving within the door stakeand enga 'ng with the body to hold the door in close position untilreleased by the door controlling mechanism, as shown in detail in Fi s.5 to 8 of the drawings. The door stake is hollowed out for a portion ofits length for the reception of this Wedge member. The back of the wedgeengages with the door stake and the face of the wedge projects beyondthe stake to engage with a portion of the door hinge and the members ofthe body to prevent rotation of the door on its hinges when in a closedposition. The locking and unlockin action of the wedge is automaticallyefl'ecte b the engagin of the depending portion 0 the door sta e withthe door controlling mechanism when the car body is tilted.

Referring now to Figs. 5 and 8 of the drawings, reference character 6indicates the door stake having a depending portion 24 containin thelocking wedge member 28. Suitably ormed portions .29 and of the bodyportion 31 of the door hinge and the members 32 fastened to the body,conform in contour to the portions 33 and 34 of the face of the wedgemember and through engagement of these members automatically locks thedoor when in a closed position.

Whenthe car body is tilted and the depsnding door members on the side ofthe dy towards which the lading is being discharged engage with the doorcontrolling mechanism, the wedge member 28 is moved upwardly to arelease position. The member 23 on the arm 22 of the door controllinmechanism engages with the surfaces 25 o the door stake and moves alongthese surfaces as the body is tilted. The wedge member is containedbetween these surfaces 25 of the door stake and extends beyond the stakeso that the surface 35 of the wedge member engages with the member 23 asit moves along the door stake and the member is moved longitudinally ofthe'stake until the surface 33 of the wedge is free of the member 29 ofthe door hinge and the door is free to open. The openin of the door andmovements of the contro lin mechanism takes place as previouslydescribed.

After the door begins to open, the rotation of the stakes and wedgemember about the hinge brings the portion 29 of the door hinge intocontact with the wedge, as shown in Fig. 5, and holds the wedge inrelease position. When the door control mechanism returns the door to aclosed osition, the wedge rotates with the door sta e and is held inrelease position until the portion 29 moves out of contact with thewedge as the door is moved to closed position and the wedge drops byavity to the position shown in Fig. 8,1ockmg the door in position. Themember 23 of the controlling mechanism moves free of the stakes as therighting movement continues and the body returns to a horizontalposition, as shown in Fig. 1. f

Having thus described the invention what I claim as new and desire tosecure by Letters Patent is:

1. In a dump car, an underframe, a dump body tiltably mounted on saidunderframe, side doors for said body hinged adjacent the floor thereofand folding down in opening, downward depending members on said doors,mechanisms mounted on said underframe for operating each side door, saidmechanisms 5 comprising a member rotatably mounted on the imderframe andmovable into and out of contact. with said dependingldoor member bythrust on said depending door member to close the door as the car bodyreturns to a horizontal position, and ,a suitable mechanism for lockingsaid doors when in closed position.

2. In a dump car, an underframe, a dump body tiltably mounted on saidunderframe, side doors for said body hinged adjacent the floor thereofand folding down in o ening, downward depending members on sai doors, amember rotatably mounted on said underframe adjacent each depending doormember, said rotatable member being operated by the tilting of said bodyto interpose said member in the path of said dependin member of thedischarging door during t e tilting and righting movements of said body,and suitable means for holding the inoperative door closed.

3. In a dump car, an underframe, a dump body tiltably mounted on saidunderframe side doors for said body hinged adjacent the floor thereofand folding down in opening, downward depending members on said doors,means mounted on each side of said underframe adjacent to and normallyout of contact with said depending door members, said means beingcontrolled by said body when tilting towards gage with said dependingmembersof the discharging door to limit the opening of said door and toreturn said door to a closed positheir respective sides to ention withthe righting of the car body, and

a member mounted on each door and engaging with the body for lockingsaiddoor when in a closed position, said means moving said last mentionedmember on the discharging door to an in perative position asthe body istilted. i 4. In a dump car, an underframe, a dump body tiltably mountedon said underframe, side doors for said body hinged adjacent the floorthereof and folding down in opening, downward depending members on saiddoors, means mounted at each side of the underframe, said meanscomprisin a member mounted on the underframe ad acent to said dependingdoor member and actuated by the tilting body when dumping toward saidmember to limit the opening of the adjacent door and to control therotation of said door to a closed position with the righting of thebody, and a locking device mounted on said door and actuated by gravityto lock said door as the body resumes a horizontal position, said meansmoving the locking member of the discharging door to position as thebody is tilted.

5.- In a dump car, an' underframe, a dump body tiltably mounted on saidunderframe,

an inoperative iao side doors for said body hinged adjacent the tloorthereof and folding down in opening, downward dependin members on saiddoors, independent mechanisms for each side door mounted on theunderirame and operated by the tilting car body for controlling theopenm and closing movements of said doors, said mechanism comprising amember rotatably mounted on the underframe adjacent the depending doormember, a member mounted on the underframe and having a selectiveengagement with the tilting car body and a connecting means between saidmembers.

6. In a dump car, an underframe, a dump body tiltably mounted on saidunderi'rame, side doors for said body hinged adjacent the floor thereofand folding down in o ening, downward depending members on sai doors,independent mechanisms for each side door mounted on the underframe,said mechanisms comprising a member pivotall mounted on the underframeadjacent sai door, a

body

member mounted on the underframe spaced from said first mentioned memberand hav ing a selective engagement with the body and a connecting meansbetween said members, and means mounted on each door and actuated bygravity for locking the doors when returned to a closed position, saidlockinn; means being moved to inoperative poi;- tion by the dooroperating mechanism at the side towards which the body is dumping.

7. -in a dump car, an under-frame, a dump tiitably mounted on said.underirame, side doors for said body hinged adjacent the door thereofand folding down in opening, downward depending members on said doors,independent mechanisms for each side door controlling the opening andclosing move- .ments of said doors, said mechanisms comprising a membermounted on the underirame and having a selective engagement with the carbody, a member mounted on the undertrame and selectively engaging withsaid depending door member, said last men- "tioned member being operatedand controlled bill by said first mentioned member, and a member mountedwithin said depending door member for locking the door when in closed aposition.

8. ln a dump car, an undertrame, a car body tiltably mounted ontrunnions at the sides of said underframe and tilting to either sidethereof in dumping, doors hinged to the sides oi said body adjacent thedoor thereof and folding down in opening, downward depending: members onsaid doors, independent mechanisms for each side door limiting theopening and forcing the closing of said door at the side toward whichthe body is tilting, said mechanisms comprising a member pivoted to theunderframe and having a selective engagement with said body, a memberpivoted to the nnderframe adjacent the side masses thereof and enagingwitli the downward depending rnem r of its respective door aftersaid door he 'ns to open with the tilting movement of sai body, and amember connecting said pivotally mounted members.

9. In a dump car, an underframe, a car body tiltably mounted on saidunderframe and tilting to either side in dumping, side doors for saidbody hinged adjacent the floor thereof and folding downward in opening,

downward depending portions of the door 7 and engaging with saiddepending door member after the body he 'ns to tilt, and a connectingmember pivoted; ends of said members.

10. The combination in a dump car of an underframe, a dump bodysupported on said underframe and tilting to either side thereof indumping, side doors for said body hinged adjacent the floor and foldingdownward in opening, downward depending portions on said doors, andindependent mechanisms for each door which control the opening andclosing movements of said door during the movements of the tilting body,said mechanisms comprising a member mounted on the body, a memberpivotally mounted on the underframe and having a bifurcated portion atone end engaging said body mounted memher, a door controlling memberpivotally mounted on the underframe, and a member connecting said saiddoor controlling member on aging the downward depending portion of theopening door to limit the opening and force the closing of said door.

11. In a dump car, an underframe, a dump body supported on trunnions ateach side of said underframe, side doors for said body hinged adjacentthe floor thereof, means at each side of said body for controlling themovement of said doors, said means comprising a member mounted on saidunderframe and actuated by the tilting movements of the body, amember'mounted on said door and in engagement with said body, a membermounted on the underframe in engagement,with said body and a memberconnecting said members mounted on the underframe, said member mountedon the door being engaged by the ad- 'acent underframe mounted member asthe ody is tilted to release the descending door for openin 12. In aiumpcar, an underframe, a, dump body tiltably mounted on said underframe,

pivotally mounted members,-

mounted on the I side doors for said body hinged adjacent the floorthereof, hollow downward dependin members on said doors, a member mounteon the underframe adjacent said de ending door member, a member mountedwit .in said depending member and on body when the door is in c osedposition, a member mounted on the underirame and in engagement with saidbody, said last men- 1 tioned member being actuated by the tilting bodto move the member mounted on the under ame adjacent the de ending doormember longitudinally of sa1d depending door member and into engagementwith the contained member as thebody is tilted.

13. In a dump car, body tiltably mounted on said underframe,

side doors for said body hinged adjacent the floor thereof, downwarddependin members on said doors, means mounted within said depending doormembers and engaging with the body to lock said doors when in closedposition, a member mounted on the underframe and controlled by thetilting movements of the body when tilting towards its respective sideof theunderframe, said last mentioned member engaging with saiddepending door member when the body is tilted to unlock and limit theopening of the door with the continned tilting of the body and to returnsaid door to a closed position to permit the looking means to engagewith the body before the body resumes a position horizontal with theunderframe.

14. In a dump car, an underframe, a dump body tiltably mounted on saidunderframe and tiltin about either side thereof in dumping, side doorsfor said body hinged adjacent the floor thereof, independent mechanisms40 for each side door mounted on the underframe for controlling theopening and closing movements of said doors, independent mechanismsmounted on said doors and engaging with the body for locking said doorswhen in closed position, said door controlling mechanisms beingcontrolled by the tilting movements of the body and in engagement withthe door only at the side towards-which the body is dumping, said doorcontrolling mechanism releasing the locking mechanisms of the doors withwhich they are in contact.

, 15. In a dump car, an underframe, a body tiltably mounted on saidunderframe, a door for said body hinged adjacent the floor thereof, amember mounted on said underframe adj acent said door,

mounted and normally free of said door, and

actuated by the movement of the tilting body to limit the opening of thedoor in proportion 0 to the tilting of the body.

16. In a dump car, an underframe, a body tiltably mounted on saidunderframe, a door for said body hinged adjacent the floor-thereof, amember mounted on said door for lock- 5 mgsame in closed position andmeans for aging with the an underframe, a dump said member beingrotatably releasing said locking means to permit the opening of the doorwhen the body is tilted, said locking means automatically returningposition when the door is close

